guille2228

Hi, guys. Been looking on the web and on here, but haven't found an answer to this problem. Car drives fine for the most part. Wife says she hears an noise when she is accelerating fast.
Been reading around that it may be a bad TCC solenoid. Where is that located? Any suggestions would be greatly appreciated.

donbrew

Assuming that the codes in the title are codes you pulled from the car.
P0741 means the Torque converter clutch is stuck OFF. i.e.: you don't have overdrive.
Unless you have a lift and some mechanicing experience you need a pro to do it. There are some complicated tests to be sure which part is bad. A fluid change might fix it.

Here are SOME of the reasons for it.

guille2228

Thanks for the fast reply. I was afraid of that. I did do a fluid/filter change of the trans hoping it would help, but it didn't. I cleared the codes, but them came back after a drive on the highway.

guille2228

One more question. Where is the TCC solenoid located? Its driving me crazy.

Oldblue

FastSUV has a how to in this thread

https://www.chevyhhr.net/forums/driv...d-61313/page3/



#312 in this diagram

donbrew

335 is the actual solenoid. 334 is the valve. 339 is the regulated apply valve.

Oldblue

Those are the shift solenoids, the TCC is 312 in that diagram also

donbrew

This is my source:
The 2 305s are the shift solenoids, 312 is the pressure control solenoid

Oldblue

Yes , I see the valve and solenoids

guille2228

Wow, awesome information! Thank you!